Picker-check for looms.



'J. S. ADAMS & M. DAY

I PICKER CHECK FOR LOOMS.

APPLICATION FILED MAY 12. I9I6- Patented May 14, 1918.

To all whom z'tmayooncern I Be it known that we, JAMES S. ADAMS and MEDICUS DAY, citizens. of the United States, and residents of Belton, Anderson county, State of South Carolina, respectively, have invented certain new and useful Improvements in Picker-Checks for Looms,

of which the following is a specification.

This invention relates to picker checks for looms, particularly to devices of this class which utilize a frictionally retarded member against which the picker stick is adapted to strike at the ends of its stroke, whereby the kinetic energy of the stick is absorbed and undesirable reboundingprevented. 7

It is the object of the invention to provide such a device which is of'simple construction, eflicient in operation, and which may be readily attached to any known type of loom. v j

The invention will be described inconnection with the accompanying drawings in which,

Figure 1 is a frontview of part of one end of a loom, showing the improvement attached thereto; 7 Y r v Fig. 2 is a rear view of part of Fig.1;

Fig. 3 is a top view of thesameyand Fig. 4 is a section along the 1ine44 of Fig.

Referring to the drawings, 10 indicates the lay of a loom of any well known construction in which a shuttle is thrown through a shed by a picker stick, 11 indicating the picker stick, 12 the shuttle, and 13 the picker's ecured to the top of the picker stick. In the operation of the loom the picker stick reciprocates from its full line position to its dotted line position, Fig. 1, in throwing the shuttle and returns again to its full line position when the shuttle is thrown back again by the picker stick on the opposite side of the loom. It is important that the picker stick remain in one of these two positions instead of occupying some intermediate position, which often happens when no picker check is used and the picker stick strikes positive unyielding stops at the ends of its stroke.

We overcome this tendency on the part of the picker stick to rebound by providing a checking means against which the picker stick strikes when near the end of its stroke in either direction and which absorbs the ex- Specification of Letters Patent.

Application filed May 12, 1916. Serial No.97,10 5. '1

fIGKER-CHEGK 1201a, oo vi'sj Patented cess kinetic energy of the stick and brings it gentlyto-rest inits correct position.

This checking means comprises a base or UNITED TATES nuns s. ADAMSsAND MEDIG'USDAY, or BELTON, scorn CAROLINA.. 1

May.14','191s.

bracket 14 secured to theside of the lay by a bolt 15, a lever 'A' pivotallymounted on the bracket, a'horizontally disposed rod '16 pivotally mounted on the lower end ofthe lever'A and provided with means against 7 which the picker stick is adapted to' strike near theends of its str0ke,'and an adjustable friction plate 17 secured to the top of the bracket, for retarding the movement of the leverA about itspivot.

The lever A comprises two arms 18' and 19, one on each side of the bracket and connected rigidly together by a bolt 20, which, as shown is integral with the arm 18 and eX- tends through the bracket and engages a square hole in the arm '19. 'The face of the block or bracket, indicated .by'20 in the drawings,'must present no projections or obstructions whichmight interfere with the picker 'stickas it'vibrates to and fro,'and for this reasonthe arm 18 is locatedin a triangular recess 21 in the face of the block andthe rod 16 is pivoted in a recess 22 in the arm 18, extending laterally through shallow recesses 23, 23 in the sides ofthe block. The'sides of'the recesses 23, 23 serve to guidethe rod 16 in its longitudinal movements and tokeep it in a horizontal position. j

I Secured'to the top of the bracket at the rear, by means of bolts 24,24 aifriction plate 17, which is spaced from the bracket and parallel. thereto, Thisfrictio n plate forms, together with the adjacent portion of the bracket, a slot through which the arm 19 moves when the lever A is rotated. By adjusting the double nuts .on the bolts 24, the plate 17 may be brought closer or spaced farther away from the bracket, thereby rendering the passage of the arm 19 difficult or free as desired, to vary the friction to suit the requirements of any particular loom and 1 stick.

The horizontal rod 16 is provided at its ends with abutments or stops 26, 26 against which the picker stick is adapted to strike at the ends of its stroke. These stops are preferably formed by bending the ends of the rod, when this is of metal but when some other material is used stops may be fastened thereto. The distance between the stops 26 is less than the distance which that the picker stick portion of the picker stick which is in the samehorizontal plane as the rod, travels in its oscillations, so that the picker stick meets one of the stops just before reaching the end of its stroke. a

After striking one of the stops the resistance of the friction check is called into'play to retard the further motion of the stick and if the friction plate is properly adjusted,

the resistance Will be just sufiicient to bring gently to rest at the end of its stroke.

The extreme simplicity of the device renders it both easy to manufacture and to apply to existing looms, a single bolt serving as a connection means between the check and the lay of the loom. The moving parts of the check being merely the reciprocating rod and the pivoted lever on which it is mounted, there is a minimum of mechanism to get out of order and the total absence of material such as leather, which is easily worn out, renders the device extremely durable and long lasting. Either wood or metal or a combination of the two may be used in the construction of the device, as desired.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent is l. Inapicker check for looms, the combination with a picker stick of a stationary bracket member adjacent thereto,a two-arm lever pivoted to said member and having one arm on each side thereof, a horizontally disposed rod, pivotally connected to one of said arms and having laterally projecting abutments thereon, said rod being bodily movable longitudinally by the picker stick on contact with either .of said abut ments as it approaches the end of its stroke in either direction, and friction means acting on the other of said arms normally tending to retard the movement of said pivoted member and said rod.

2. In a picker check for looms, a picker stick, *a horizontally disposed rod having laterally projecting abutments thereon, said rod being adapted to be moved by the picker stick as it approaches the end'of its stroke in either direction, a stationary member a member pivoted to said stationary member and to said rod, and friction means between said stationary member and said pivoted member tending to prevent the movement of said pivoted member and rod relative to said stationary member.

3. In a picker check for looms, a picker stick, a horizontally disposed rod having laterally projecting abutments thereon, sa-id rod being-adapted to be moved bodily by the picker stick as it approaches t lieyend of its stroke in either direction, a stationary member, a member pivoted at or near its center to said stationary member and pivoted at its lower end to said rod, and adjustable friction means acting on the upper end of said pivoted member normally tending to prevent the movement of said pivoted member relative to said stationary member and therefore of said rod relatively to said stationary member.

4L. In a picker check for looms, a picker stick, a horizontally disposed rod having laterally projecting stops thereon, said rod being adapted to be moved bodily by. the,

picker stick as it approaches the end of its stroke in either direction, a stationary member having a recess therein, a two arm lever pivoted to said stationary member, having one of said arms looated-insaid recess and tures.

JAMES S. ADAMS. MEDICUS DAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

WashingtomD. C. 

